Dental appliance



FIG. 1 is a front, bottom and left side perspective view of a dental appliance showing the new design.

FIG. 2 is a rear, bottom and left side perspective view thereof.

FIG. 3 is a front view thereof.

FIG. 4 is a rear view thereof.

FIG. 5 is a right side view thereof; and,

FIG. 6 is a left side view thereof. 

CLAIM The ornamental design for a dental appliance, as shown. 